You make a saturated solution of NaCl at 25°C. No solid is present in the beaker holding the solution.
What can be done to increase the amount of dissolved NaCl in this solution? (See Figure 13.11.)
(a) Add more solid NaCl.
(b) Raise the temperature of the solution.
(c) Raise the temperature of the solution, and add some NaCl.
(d) Lower the temperature of the solution, and add some NaCl.

Data given in Figure 13.11

Transcribed Image Text:

g salt/100 g H₂0 180 160 140 120 100 80 40 20 /CsCl NaNO3 RbCl LiCl NH₂CL KCL NaCl Li₂SO4 20 40 60 80 100 Temperature (°C) (a) Temperature dependence of the solubility of some ionic compounds. 500 ml 15% -400 -300 200 100 500 mL +5% 400 300 (b) NH4Cl dissolved in water. Figure 13.11 The temperature dependence of the solubility of some ionic compounds in water. The solubility of most ionic compounds increases with increasing temperature. This is illustrated using NH4Cl (parts b and c). (c) NH4Cl precipitates when the solution is cooled in ice. Photos: Cengage Learning/Charles D. Winters